Microoptics for glazing

Abstract

The present disclosure provides lamination transfer films and use of the lamination transfer films, particular in the fabrication of architectural glass elements, such as those used in Insulated Glass Units (IGUs). The lamination transfer films may be used to transfer functional layers and structures. The lamination transfer films may include a support film that can be removed during the transfer process, and the transferred materials are primarily inorganic. The resulting transferred structures on glass generally have high photo- and thermal-stability, and therefore can successfully be applied to the glass surfaces that are interior to the cavity within an IGU. The lamination transfer films can also be patterned such that macroscopic patterns of microoptical elements can be applied on a glass surface.

What is claimed is: 
     
       1. A transfer tape, comprising:
 a template layer having a structured surface; 
 a backfill layer disposed on at least a portion of the template layer, the backfill layer comprising an organosilicon material having a planar surface opposite the structured surface; and 
 a diffuser layer comprising polysiloxane disposed adjacent the planar surface, wherein the diffuser layer is capable of adhering to a glass surface, and the template layer is capable of being removed from the backfill layer. 
 
     
     
       2. The transfer tape of  claim 1 , wherein the organosilicon material comprises highly branched organosilicon oligomers, highly branched organosilicon polymers, or combinations thereof. 
     
     
       3. The transfer tape of  claim 1 , wherein the backfill layer comprises a silsesquioxane. 
     
     
       4. The transfer tape of  claim 3 , wherein the silsesquioxane comprises a vinyl silsesquioxane. 
     
     
       5. The transfer tape of  claim 1 , wherein the structured surface comprises surface features greater than about 10 microns in height. 
     
     
       6. The transfer tape of  claim 1 , wherein the structured surface comprises a plurality of islands, dots, lines, solid areas, or a combination thereof that extend over a surface of a receptor substrate and optionally comprise a gradient in areal density of the structured surface. 
     
     
       7. A transfer tape, comprising:
 a template layer having a structured surface; and 
 a backfill layer disposed on at least a portion of the template layer, the backfill layer comprising an organosilicon material having a planar surface opposite the structured surface, 
 a diffuser layer comprising polysiloxane disposed adjacent the planar surface, wherein the backfill layer and the diffuser layer are essentially coextensive and disposed in a pattern on the template layer. 
 
     
     
       8. The transfer tape of  claim 7 , wherein the organosilicon material comprises highly branched organosilicon oligomers, highly branched organosilicon polymers, or combinations thereof. 
     
     
       9. The transfer tape of  claim 7 , wherein the backfill layer comprises a silsesquioxane. 
     
     
       10. The transfer tape of  claim 9 , wherein the silsesquioxane comprises a vinyl silsesquioxane. 
     
     
       11. The transfer tape of  claim 7 , wherein the structured surface comprises surface features greater than about 10 microns in height. 
     
     
       12. The transfer tape of  claim 7 , wherein the structured surface comprises a plurality of islands, dots, lines, solid areas, or a combination thereof that extend over a surface of a receptor substrate and optionally comprise a gradient in areal density of the structured surface. 
     
     
       13. A transfer tape, comprising:
 a template layer having a structured surface; 
 a backfill layer disposed on at least a portion of the template layer, the backfill layer comprising an organosilicon material having a planar surface opposite the structured surface; and 
 a diffuser layer comprising polysiloxane disposed adjacent the planar surface, wherein the diffuser layer is adhered to a pane of glass such that sunlight passing through the pane of glass is refracted by the backfill layer before passing through the diffuser layer, and the template layer is capable of being removed from the backfill layer.